Jiangsu Cai Qin Technology Co., Ltd. (688182.SS) engages in the research, development, production, and sale of microwave dielectric ceramic components and telecommunications equipment for mobile communications, satellite navigation and communications, aerospace, electronic devices, Internet of Things, automotive, and related industries in China and internationally. The company offers ceramic dielectric filters, dielectric waveguide filters, cavity filters, resonators, dielectric duplexers and multiplexers, low intermodulation passive components, antennas including satellite timing and RFID antennas, high-performance ceramic structures and functional devices, RF modules and systems, ceramic packages, substrates, and thin-film MEMS devices; it also conducts import and export operations. Founded in 2004 and headquartered in Zhangjiagang Free Trade Zone, Jiangsu Province, China, the company listed on the Shanghai Stock Exchange STAR Market in November 2021 and maintains certifications such as ISO9001 and ISO14001 as a partner in China Mobile's 5G Joint Innovation Center. In November 2024, certain A shares concluded a lock-up agreement, enabling greater share liquidity following the initial listing restrictions.